ive seen loads of pics but not many have commented on how they are drive wise and how they compare to normal springs. I think my cup packed 182 handles well but feels everything on the road and bumpy. thinking the springs will make it worse? less body roll?
Driving wise, they feel firmer - more at the rear than anything. I've noticed that with little or no weight in the rear and say 1/4 of a tank of juice, it does feel more 'bobbly' - like the it reacts very quickly to slight rises in the tarmac.
They are on my car which is my daily driver and I can't imagine going back to the OEM ones now. Funnily enough, one of the rear Eibach's had failed and as a consequence, my car failed its MOT last month. The kind lads at Birchdown whipped on a pair of standard 182 springs on the rear (mine's cup-packed as well) to get it through the MOT and the change was definitely noticable.
Driving home, the car felt more nose-heavy and tail-higher than before - which was to be expected. It felt slightly more sloppy around things like tight roundabouts as well - but still handled great.
I'd say I got my Sportlines mainly for the aesthetic appearance in the drop - certainly from a profile view. But there is a subtle and worthwhile (imo) change in the way the car handles. It's not crashy or banging over every slight deformation in the tarmac, but it's certainly feels more tightened when commiting to corners/sweeping bends.
D.